Disabling module on stop doesn't work on some CPUs (ie. mpc8241,
as reported by Guennadi Liakhovetski), so remove that.

Disable I2C module on errors/interrupts to prevent it from
locking up on mpc5200b.
Signed-off-by: NDomen Puncer <domen.puncer@telargo.com>
Acked-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

In order to be able to use sensors on the IOP3xx SoCs, one needs to set
the adapter class to I2C_CLASS_HWMON.
Signed-off-by: NArnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Build fixes for isp1301_omap driver.  I think an earlier version
of this must have gotten lost somewhere, or maybe it only went
into the Linux-OMAP tree.

Also, some whitespace fixes to bring this more into sync with the
version of this found in the Linux-OMAP tree.  (That version has
updates for the OTG controller on the OMAP 1710 which break that
functionality on OMAP 161x boards like the H2, so merging all of
it is not currently an option.)
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Signed-off-by: NScott Wood <scottwood@freescale.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Signed-off-by: NJean Delvare <khali@linux-fr.org>

Replace CONFIG_SOFTWARE_SUSPEND with CONFIG_HIBERNATION to avoid
confusion (among other things, with CONFIG_SUSPEND introduced in the
next patch).
Signed-off-by: NRafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

ia64:

drivers/i2c/chips/ds1682.c: In function `ds1682_show':
drivers/i2c/chips/ds1682.c:78: warning: long long unsigned int format, long unsigned int arg (arg 3)
drivers/i2c/chips/ds1682.c:78: warning: long long unsigned int format, long unsigned int arg (arg 3)

Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NBryan Wu <bryan.wu@analog.com>

There are no users of i2c-isa left, so we can finally get rid of it.
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Add Texas Instruments TWL92330/Menelaus Power Management chip driver.  This
includes voltage regulators, Dual slot memory card tranceivers and
real-time clock(RTC).

The support for RTC is integrated with this driver only; it is not separate
module.  Passes 'rtctest' on OMAP H4 EVM, other than lack of "periodic"
(1/N second) IRQs.  System wakeup alarms (from suspend-to-RAM) work too.

The battery keeps the RTC active over power off, so once you set clock
(rdate/ntpdate/etc, then "hwclock -w") then RTC_HCTOSYS at boot time will
behave as expected.

Cc: "Jean Delvare" <khali@linux-fr.org>
Cc: "Tony Lindgren" <tony@atomide.com>
Cc: "David Brownell" <david-b@pacbell.net>
Signed-off-by: NTrilok Soni <soni.trilok@gmail.com>
Acked-by: NAlessandro Zummo <alessandro.zummo@towertech.it>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NYoann Padioleau <padator@wanadoo.fr>
Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

It depends on tristate I2C and it's trivial to make modular.  The
current Kconfig allows I2C=m, I2C_ACORN=y, which doesn't work at
all; alternatives are dependency on I2C=y and making I2C_ACORN
itself a tristate.  The latter is the right thing to do...
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
Acked-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Fallout from commit 91a69029 ('sysfs:
add parameter "struct bin_attribute *" ...')
Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

This driver has been broken forever. It depends on i2c-algo-8xx which
has never been in the mainline kernel.
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Work around a problem reported on:
http://ozlabs.org/pipermail/linuxppc-embedded/2005-July/019038.html
Without this patch I2C on mpc5200 becomes unusable after a while.
Tested on mpc5200 boards by Matthias Fechner and me.
Signed-off-by: NDomen Puncer <domen.puncer@telargo.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Add TWI driver for the PMC-Sierra MSP71xx devices.

[JD: Drop the probe hack, don't set algo_data as we never use it, return
the right error code if the driver registration fails.]
Signed-off-by: NMarc St-Jean <Marc_St-Jean@pmc-sierra.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Signed-off-by: NJean Delvare <khali@linux-fr.org>

There's some redundancy in the tsl2550 initialization sequence. It is
powering up the device twice, and setting the operating mode twice
too. Setting things just once saves SMBus transactions, which aren't
always cheap, speeding up the device initialization.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Cc: Rodolfo Giometti <giometti@linux.it>

This is a new I2C bus driver for the TAOS evaluation modules. Developped
and tested on the TAOS TSL2550 EVM.
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Add an ability to utilize the internal SRAM buffer on ICH4
and newer host controllers to speed up execution of block operations.

I've split the code so that it is more clear which block transaction is
performed.

First of all the host controller's type is identified. isich4 is set when
we think that the controller has the internal buffer. Then, before every
block transaction, if isich4 is set, we attempt to enable the E32B bit in
SMBAUXCTL register.
Signed-off-by: NOleg Ryjkov <olegr@google.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

* Use defines instead of raw numbers for register bits
* Fix several wrong indentations and trailing whitespace
* Move hwpec timeout checking to a separate function
Signed-off-by: NOleg Ryjkov <olegr@google.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Add support for Taos TSL2550 ambient light sensors.
(http://www.taosinc.com/product_detail.asp?cateid=4&proid=18).
Signed-off-by: NRodolfo Giometti <giometti@linux.it>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Signed-off-by: NRodolfo Giometti <giometti@linux.it>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

i2c_gpio_getsda() and i2c_gpio_getscl() are only used in this file.
Signed-off-by: NAtsushi Nemoto <anemo@mba.ocn.ne.jp>
Acked-by: NHaavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Use i2c_bit_add_numbered_bus() so that the i2c-gpio adapter works well
with new-style pre-declared devices.
Signed-off-by: NAtsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Update the IOP3xx I2C driver to use i2c_add_numbered_adapter(), so that
later patches can convert boards to using new-style drivers.
Signed-off-by: NMartin Michlmayr <tbm@cyrius.com>
Tested-by: NVoipio Riku <Riku.Voipio@movial.fi>
Cc: Dan J Williams <dan.j.williams@intel.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Let the i2c-sis5595 driver release its PCI device after registering.
This is to allow the sis5595 hardware monitoring driver to also
access this PCI device. The same trick is already used in the
i2c-viapro and via686a drivers to let them both load.
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Add support for SMBus block read/write transactions to i2c-nforce2
driver, in particular to host controllers MCP51 and MCP55.
Signed-off-by: NOleg Ryjkov <olegr@google.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Move the i2c-mpc driver over to using the new i2c infrastructure.
Specifically, it now uses i2c_add_numbered_adapter so that the bus number
can be determined ahead of time and used to register i2c clients before
the bus is instantiated.

Tested on an MPC5200 based board
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Convert the Marvell mv64xxx I2C driver to use the new i2c infrastructure,
by calling i2c_add_numbered_adapter().  This allows clients to be
registered before the bus is instantiated.
Signed-off-by: NDale Farnsworth <dale@farnsworth.org>
Acked-by: NMark A. Greer <mgreer@mvista.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Add the SMBus device ID for ATI SB700.
Signed-off-by: NHenry Su <Henry.su@amd.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

A driver for the Dallas DS1682 elapsed time recorder chip.

Tested on a MPC5200 based board using the integrated i2c adapter.
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Let the drivers specify how many bytes they want to read with
i2c_smbus_read_i2c_block_data(). So far, the block count was
hard-coded to I2C_SMBUS_BLOCK_MAX (32), which did not make much sense.
Many driver authors complained about this before, and I believe it's
about time to fix it. Right now, authors have to do technically stupid
things, such as individual byte reads or full-fledged I2C messaging,
to work around the problem. We do not want to encourage that.

I even found that some bus drivers (e.g. i2c-amd8111) already
implemented I2C block read the "right" way, that is, they didn't
follow the old, broken standard. The fact that it was never noticed
before just shows how little i2c_smbus_read_i2c_block_data() was used,
which isn't that surprising given how broken its prototype was so far.

There are some obvious compatiblity considerations:
* This changes the i2c_smbus_read_i2c_block_data() prototype. Users
  outside the kernel tree will notice at compilation time, and will
  have to update their code.
* User-space has access to i2c_smbus_xfer() directly using i2c-dev, so
  the changed expectations would affect tools such as i2cdump. In order
  to preserve binary compatibility, we give I2C_SMBUS_I2C_BLOCK_DATA
  a new numeric value, and define I2C_SMBUS_I2C_BLOCK_BROKEN with the
  old numeric value. When i2c-dev receives a transaction with the
  old value, it can convert it to the new format on the fly.
Signed-off-by: NJean Delvare <khali@linux-fr.org>

We have a new RTC subsystem with better drivers.

Legacy driver status:
* ds1337: The DS1337 and DS1339 are now supported by the rtc-ds1307
  driver, so it looks to me like we could even delete the ds1337
  driver right away.
* ds1374: Will soon be replaced with Scott Wood's rtc-ds1374 driver.
* m41t00: The M41T00 is supported by the rtc-ds1307 driver. For the
  M41T81 and M41T85, the rtc-m41t80 driver written by Atsushi Nemoto
  should work.
Signed-off-by: NJean Delvare <khali@linux-fr.org>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Acked-by: NMark A. Greer <mgreer@mvista.com>
Acked-by: NJames Chapman <jchapman@katalix.com>
Cc: Randy Vinson <rvinson@mvista.com>

The scx200_acb driver use a semaphore as mutex.  Use the mutex API
instead of the (binary) semaphore.
Signed-off-by: NMatthias Kaehlcke <matthias.kaehlcke@gmail.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Cc: Jordan Crouse <jordan.crouse@amd.com>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Generate I2C kerneldoc; fix various glitches and add "context" sections to
that documentation.  Most I2C and SMBus functions still have no kerneldoc.

Let me suggest providing kerneldoc for all the i2c_smbus_*() functions as
a small and mostly self-contained project for anyone so inclined.  :)
Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NJean Delvare <khali@linux-fr.org>

Well, first of all, I don't want to change so many files either.

What I do:
Adding a new parameter "struct bin_attribute *" in the
.read/.write methods for the sysfs binary attributes.

In fact, only the four lines change in fs/sysfs/bin.c and
include/linux/sysfs.h do the real work.
But I have to update all the files that use binary attributes
to make them compatible with the new .read and .write methods.
I'm not sure if I missed any. :(

Why I do this:
For a sysfs attribute, we can get a pointer pointing to the
struct attribute in the .show/.store method,
while we can't do this for the binary attributes.
I don't know why this is different, but this does make it not
so handy to use the binary attributes as the regular ones.
So I think this patch is reasonable. :)

Who benefits from it:
The patch that exposes ACPI tables in sysfs
requires such an improvement.
All the table binary attributes share the same .read method.
Parameter "struct bin_attribute *" is used to get
the table signature and instance number which are used to
distinguish different ACPI table binary attributes.

Without this parameter, we need to offer different .read methods
for different ACPI table binary attributes.
This is impossible as there are various ACPI tables on different
platforms, and we don't know what they are until they are loaded.
Signed-off-by: NZhang Rui <rui.zhang@intel.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

sysfs is now completely out of driver/module lifetime game.  After
deletion, a sysfs node doesn't access anything outside sysfs proper,
so there's no reason to hold onto the attribute owners.  Note that
often the wrong modules were accounted for as owners leading to
accessing removed modules.

This patch kills now unnecessary attribute->owner.  Note that with
this change, userland holding a sysfs node does not prevent the
backing module from being unloaded.

For more info regarding lifetime rule cleanup, please read the
following message.

  http://article.gmane.org/gmane.linux.kernel/510293

(tweaked by Greg to not delete the field just yet, to make it easier to
merge things properly.)
Signed-off-by: NTejun Heo <htejun@gmail.com>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Instead of all drivers reading pci config space to get the revision
ID, they can now use the pci_device->revision member.

This exposes some issues where drivers where reading a word or a dword
for the revision number, and adding useless error-handling around the
read. Some drivers even just read it for no purpose of all.

In devices where the revision ID is being copied over and used in what
appears to be the equivalent of hotpath, I have left the copy code
and the cached copy as not to influence the driver's performance.

Compile tested with make all{yes,mod}config on x86_64 and i386.
Signed-off-by: NAuke Kok <auke-jan.h.kok@intel.com>
Acked-by: NDave Jones <davej@redhat.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Using lockdep validator causes warnings like

  INFO: trying to register non-static key.
  the code is fine but needs lockdep annotation.
  turning off the locking correctness validator.
  [<c00241a0>] (dump_stack+0x0/0x14) from [<c00520f8>] (__lock_acquire+0x150/0xc40)
  [<c0051fa8>] (__lock_acquire+0x0/0xc40) from [<c00530a0>] (lock_acquire+0x5c/0x70)
  [<c0053044>] (lock_acquire+0x0/0x70) from [<c01d9e44>] (_spin_lock_irq+0x48/0x58)
   r7:c07e5144 r6:00000000 r5:c015fb94 r4:c07e50b8
  [<c01d9dfc>] (_spin_lock_irq+0x0/0x58) from [<c015fb94>] (i2c_pxa_xfer+0x110/0x2e0)
   r5:c07e50b8 r4:0000001f

This is caused by memcpy'ing a statical initialized spin-lock. This patch
removes a static pxa_i2c structure which was used only as a source for this
memcpy() operation. Instead of, members and the spinlock will be
initialized manually.
Signed-off-by: NEnrico Scholz <enrico.scholz@sigma-chemnitz.de>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>